1-氯-4-异氰基苯   、                                                                                      
1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene                                                                                                                                                                                              以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                    反应 11.0h,
                                                                                                                以81%的产率得到5-chloro-1-(3,3-dimethyl-2-oxo-1-phenylazetidin-4-yl)-2-((Z)-3,3-dimethyl-2-oxo-1-phenylazetidin-4-ylidene)-3-(p-chlorophenylimino)-2,3-dihydroindole